1. 1. Duke-Elder S Sir ST Wybar KC. The Anatomy of the Visual System vol II System of Ophthalmology. London: Henry Kimpton; 1961:314-315.
2. 2. Greer CH. Ocular Pathology. Oxford-Melbourne: Blackwell Publications; 1979;134.
3. 3. Spencer WH. Ophthalmic Pathology vol I. Philadelphia Pa: WB Saunders; 1985;430.
4. 4. Runyan TE. Concussive and Penetrating Injuries of the Globe and Optic Nerve. St Louis Mo: CV Mosby; 1975;81.
5. 5. Brownell RD Wolter JR. Anterior lenticonus in familial hemorrhagic nephritis. Am J Ophthalmol. 1964;71:481-483.